There's a hypermarket at the mall. Huge choice of packed food goods as well as non-food items, but the choice is not exactly what you'd find in a supermarket in Britain-fair enough. The fresh produce is fantastic though. 
The fish looks and smells fresh
Massive fish. I was just shooting pics as I passed through. 
I didn't take many pics of the large butchers section, 
but here's turkey, black chicken and duck.
I think if you were in Cochin or Trivandrum and you felt you just had to cook, Lulu Mall would actually be a reasonable place to source your food conveniently, although certainly not the cheapest or most authentic option.
